`geo` is the only mandatory field. As an overview, a `Metag` object may contain weather status, measured data (temperature, pressure, humidity, etc) and sensory info (I feel hot/warm/etc). Detailed reference is available on the [Metwit API documentation page for metags](http://metwit.com/developers/docs/resources/metags/).

*`client_id`* and *`client_secret`* come from the [Developer Dashboard](https://metwit.com/developers/dashboard/). You only need those if you registered an application. You shouldn't include a client secret if you are going to distribute the code of your application (as opposed to application code hosted on a server, or running on your machine, for example).

If you stored an *`access_token`* (and *`refresh_token`*) elsewhere you can pass them to the constructor, otherwise you can make unauthenticated calls, or obtain a token with `get_token()` or one of the shortcut methods.

#### `Metwit.metags`
#### `Metwit.weather`
#### `Metwit.users`
These are the API resources. You can `.get()` and `.post()` these, or get
individual items with the subscript operator (e.g. `Metwit.metag['123456'].get()`).

#### `Metwit.get_token(grant_type, **kwargs)`
Calls the token endpoint to obtain an access token. The `Metwit` object stores the access token for you, so API calls after this will be authenticated.

#### `Metwit.dialog(redirect_uri, [scope], [state], [implicit])`
Returns the URL for the OAuth 2.0 authorization dialog. If you want to act in behalf of the users, you should redirect their browser to this URL.

#### `Metwit.token_auth_code(code, redirect_uri)`
This is a shortcut to `get_token()`. Use it when your users go through the
authorization dialog and you get the authorization code back.

#### `Metwit.token_client_credentials()`
This is a shortcut to `get_token()`. Use it when you just want to query the
weather and don't need to act in behalf of a user.

#### `Metwit.token_password(username, password, [scope])`
This is a shortcut to `get_token()`. Use it when you have the username and
the password of a Metwit user.

#### `Metwit.resource(uri)`
Use this when you have the URI of a resource and need to access it. E.g.
`metwit.resource('/v2/metags/123456/').get()`.